- 1. [Amps] Re: Amps Digest, Vol 25, Issue 60 (score: 1)
- Author: John and Mary Powell <zl1bhq@paradise.net.nz>
- Date: Mon, 24 Jan 2005 19:12:57 +1300
- Carlos my late father, ZL1ACP re-tubed his 30L1 with 572B's without modification and the amp ran fine. He late sold it as re-tubed with no adverse comment from the purchaser. 73 John Powell. ZL1BHQ -
- /archives//html/Amps/2005-01/msg00509.html (26,858 bytes)
- 2. [Amps] Re: Amps Digest, Vol 25, Issue 60 (score: 1)
- Author: "Joe Crawford" <crawfish@surfmore.net>
- Date: Mon, 24 Jan 2005 00:30:01 -0600
- Some amps biased the 811A's at -4.5 vdc. To run the 572B's, disconnect the bias and ground the pins. Reference WB2EGZ article in 73 back in 1966. You might want to short across input filter choke to
- /archives//html/Amps/2005-01/msg00510.html (26,260 bytes)
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